Figure 3-11 The RTP payload format for tones in .NET

Make Data Matrix ECC200 in .NET Figure 3-11 The RTP payload format for tones

Figure 3-11 The RTP payload format for tones
Data Matrix Encoder In .NET
Using Barcode creation for Visual Studio .NET Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
Decoding Data Matrix 2d Barcode In Visual Studio .NET
Using Barcode reader for .NET Control to read, scan read, scan image in VS .NET applications.
0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 Modulation R R R R R R R R T Volume R R R R R R R R Duration Frequency Frequency
Printing Barcode In Visual Studio .NET
Using Barcode creation for VS .NET Control to generate, create barcode image in .NET applications.
Recognize Bar Code In .NET Framework
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
Frequency Frequency
Draw DataMatrix In Visual C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create Data Matrix image in Visual Studio .NET applications.
Data Matrix 2d Barcode Generator In VS .NET
Using Barcode generation for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
R R R R
Data Matrix Drawer In VB.NET
Using Barcode generator for .NET Control to generate, create Data Matrix image in .NET applications.
Bar Code Maker In .NET
Using Barcode generation for VS .NET Control to generate, create barcode image in .NET applications.
Frequency
Create UPC A In Visual Studio .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create GTIN - 12 image in VS .NET applications.
Barcode Encoder In .NET Framework
Using Barcode creator for Visual Studio .NET Control to generate, create barcode image in VS .NET applications.
R R R R
European Article Number 13 Creation In VS .NET
Using Barcode creator for .NET Control to generate, create EAN-13 image in .NET applications.
Generating EAN8 In .NET
Using Barcode encoder for VS .NET Control to generate, create EAN-8 Supplement 5 Add-On image in VS .NET applications.
Frequency
Paint Barcode In VB.NET
Using Barcode printer for Visual Studio .NET Control to generate, create barcode image in .NET framework applications.
Draw UPC-A In None
Using Barcode generator for Software Control to generate, create UCC - 12 image in Software applications.
same, indicating the instant that the tone was detected, with the duration field increased in each packet Figure 3-11 shows the payload format to be used for the second method of representing a tone, that is, when sending a description of the tone characteristics The modulation field indicates the modulation in Hz, up to a maximum of 511 Hz If no modulation exists, this field is 0 The T bit indicates whether the modulation frequency is to be divided by 3 Some tones are in use where the modulation frequency is not a whole number of Hz For example, cases occur where modulation at 16 2/3 Hz is used The volume measures the volume of the tone from 0 dBm0 to 63 dBm0 The duration is in RTP timestamp units The frequency indicates the frequency, in Hz, of one component of the tone This field support values up to 4,095 Hz, which exceeds the frequency range telephone systems Note that a given tone can have multiple frequency components For example, MF (as used in R1-MF signaling) stands for multifrequency The R field is reserved for future use
Draw USS-128 In Java
Using Barcode creator for Java Control to generate, create EAN 128 image in Java applications.
Drawing Bar Code In VS .NET
Using Barcode maker for Reporting Service Control to generate, create bar code image in Reporting Service applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
DataMatrix Recognizer In Visual Studio .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
Printing USS Code 39 In None
Using Barcode printer for Font Control to generate, create Code 3/9 image in Font applications.
Speech-Coding Techniques
Making Data Matrix In Objective-C
Using Barcode creation for iPhone Control to generate, create Data Matrix ECC200 image in iPhone applications.
Linear Creator In Visual C#
Using Barcode creation for Visual Studio .NET Control to generate, create Linear 1D Barcode image in .NET framework applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Source: Carrier Grade Voice Over IP
CHAPTER
H323
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
H323
4
The foregoing chapters address the issues related to Internet Protocol (IP) networks in general and the mechanisms for transporting digitally encoded voice across those networks 2, Transport Voice by Using IP, in particular, describes how voice is carried in Real-Time Transport Protocol (RTP) packets between session participants What is not addressed, however, is the setup and teardown of those voice sessions Thus far, we have assumed that session participants know of each other s existence and that media sessions are somehow created such that they can exchange voice using RTP packets So how are those sessions created and ended How does one party indicate to another a desire to set up a call, and how does the second party indicate a willingness to accept the call The answer is signaling In traditional telephony networks, specific signaling protocols are invoked before and during a call in order to communicate a desire to set up a call, to monitor call progress, and to gracefully bring a call to an end Perhaps the best example is the ISDN User Part (ISUP), a component of the Signaling System 7 (SS7) signaling suite In Voice over IP (VoIP) systems, signaling protocols are necessary for exactly the same reasons The very first VoIP systems used proprietary signaling protocols The immediate drawback was that two users could communicate only if they both used systems from the same vendor This lack of interoperability between systems from different vendors was a major inconvenience and impeded the early adoption of VoIP In response to this problem, the International Telecommunications Union Telecommunications Standardization Sector (ITU-T) recommendation H323 was developed, which serves as a standardized signaling protocol for VoIP H323 is the most widely deployed standard in VoIP networks today and is the focus of this chapter The first version of H323 was released in 1996 and bore the title Visual Telephone Systems and Equipment for Local Area Networks Which Provide a Non-Guaranteed Quality of Service (quite a mouthful) Its scope was multimedia communications over local area networks (LANs) As such, many found the first version of H323 to be lacking the functions needed for supporting VoIP in a broader environment Consequently, the ITU-T produced version 2 of H323, which was released in 1998 This bears the friendlier title, Packet-based Multimedia Communications Systems, and has seen greater acceptance and deployment Since the publication of H323 version 2, additional enhancements have been specified, which have led to additional revisions of the specification The most recent version is H323 version 4 Wherever we make reference to H323 in this chapter, we are implying version 4 (unless otherwise stated)
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
H323
H323
Copyright © OnBarcode.com . All rights reserved.